Half to william mcintyre



(No Model.)

N. M. MoLEOD.

vxsa. V r

Patented May '15, 1883.

UNITED STATES PATENT OFFICE.

NORMAN M. MOLEOI), OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO WILLIAM MGINTYRE, OF SAME PLACE.

VISE.

SPECIFICATION forming part of Letters Patent No. 277,592, dated May 15, 1883.

v 7 Application tiled Aprilfi,1882. (No model.)

To all whom it may concern:

Be it known that I, NORMAN M. MeLEoD, of Cambridge, county of Middlesex, State of Massachusetts, havein vented an Improvement 5 in Vises, of which thefollowing description, in connection with the accompanying drawings, is a specification. I

My invention has for its object the production of a vise where one of the jaws is free to l swivel or turn, to thereby adapt the jaws to the taper of the article to he clamped between them.

In this my invention'l have mounted upon the jaw-carriage a jaw which is free to swivel 1 or turn axially to enable a tapering or other shaped stick or article to be firmly clamped between the facesof the jaws. The connection between the swiveling-jaw and jaw-carriage is herein shown of such construction that the said jaw may be moved vertically with relation to the carriage, or be removed from the said carriage only when the said jaw has its face substantially at right angles to the face of the opposed jaw, so there is no possibility 2 of the said swiveling jaw moving vertically when the vise is in operation. Thescrew for operating the jaw carriage has an annular groove which receives a forkedkey inserted in a groove or guideway of the said carriage,

0 the said fork holding the screw in position with relation to the said carriage, so that the screw has only a movement of rotation with relation to the said carriage. The threaded shank of the screw is entered into along threaded nut rising from the'base holding the fixed Figure 1 represents in vertical longitudinal section a vise embodying my invention; Fig.

2, a detail of the forward end of thejaw-car- 4.0 riage, with the swiveling or axially-movable jaw removed to show the construction of the devices for holding the jaw upon the carriage.

Fig. 3 is a front View ofFig. 2, partially broken out to show the forked key for holding the screw in position with relation to the carriage;

and Fig. 4 is aperspective view, bottom up, of

a part of the swiveling or axially-movable jaw.

The base a, which will be fixed to a bench or otherwise by suitable screws or bolts, has ris- 5o ing from it a block, I), provided with a screwthread to receive the threaded shank of the screw 0, provided near its outer end or head with an annular groove, 0 which is entered by the forked key 11, inserted in the passage or guidewayZ, made for its reception at the front end of the jaw-carriage c.

The key d,

entering the said groove 0 as shown in Figs. 1 and 3, maintains the screw 0 in place with relation to the carriage,so that as the screw is rotated with its shank in the block b the screw rotates in its bearing in the said carriage and draws the carriage with it. as a fixed part of the base a.

The jawfis made The carriage e able jaw g.

The shank of jaw g is provided with a chamber, 5, and one or more projections, 6, (see Fig. 4,) and the carriage, a short distance above the seat 3, is provided with .a flange, h, cut away at one or more places, (herein shown as two places,) to form spaces 8, through which the projections (i of thejaw 9 may pass during certain positions of the said jaw-via, when its acting face is substantially at right angles to the face of the opposed jaw, f, the said projection 6 having passed down through the said spaces 8 by a partial rotation of the jaw g, coming into the annular groove 10 below the projecting parts of the flange, thus holding the jaw 1 down in such position that it can move only axially.

The pin in. is

extended upward from the flange or head It into a hole made in the jaw g, the said pin steadying thejaw g in its movements.

Swiveling or pivoting the jawg in this way permits itto be turned more or less axially, so as to place its face 12 more or less out of parallel with relation to the face 13 of the fixedja-wf, thus enabling the said jaws to firmly clamp for their whole length a tapering rod, bar, or other article, such adaptation of the jaws to the surface of the material held between them being advantageousin carriage and other work. Immediately below the flange h, I have placed a stop, or, against one side of which one of the projections 6 strikes when the faces of the jawsfg are parallel.

Thejaw y, when turned out of parallel with relation to the face ofjaw 2. The base a, its threaded block b, and the f, can move only in one direction-that is to say, only away from the stop m.

1 claim 3, for the movable jaw, the

flange h on said seat, cut away at S, and having the groove 10, 10 pin m, and stop a, and the said movable jaw g, having a socket to receive the pin m, and a subjaoent chamber, 5, provided with projections 6 to receive and engage the flange h, all

constructed and arranged to Is tially as specified.

operate substanscrew 0, provided with the annular groove 0 combined with the forked key d, the jaw-oarriage into which the, said key is fitted to slide, and the swiveling or axially-movable jawg, to operate substantially as and for the'purpose set forth.

In testimony whereof I have signed my name to, this specification in the presence of two subscribing witnesses.

NORMAN M. McLEOD.

Witnesses:

G. W. GREGORY, W ILLIAM MCINTYRE. 

